19890663

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1579}}^1$

素因数の和:1631

約数の個数: 32

約数和(自身を含む): 31852800

約数和(自身を除く): 11962137

約数列:

[1, 3, 13, 17, 19, 39, 51, 57, 221, 247, 323, 663, 741, 969, 1579, 4199, 4737, 12597, 20527, 26843, 30001, 61581, 80529, 90003, 348959, 390013, 510017, 1046877, 1170039, 1530051, 6630221, 19890663]

約数ペア:

[(1, 19890663), (3, 6630221), (13, 1530051), (17, 1170039), (19, 1046877), (39, 510017), (51, 390013), (57, 348959), (221, 90003), (247, 80529), (323, 61581), (663, 30001), (741, 26843), (969, 20527), (1579, 12597), (4199, 4737)]